Add skeleton for advanced page

Software/src/devboard/webserver/advanced_battery_html.cpp

@@ -10,18 +10,19 @@ String advanced_battery_processor(const String& var) {
     content += "body { background-color: black; color: white; }";
     content += "</style>";
 
+    content += "<button onclick='goToMainPage()'>Back to main page</button>";
+
     // Start a new block with a specific background color
     content += "<div style='background-color: #303E47; padding: 10px; margin-bottom: 10px;border-radius: 50px'>";
 
-    content += "<h4 style='color: white;'>SSID: <span id='SSID'></span> <button onclick='editSSID()'>Edit</button></h4>";
+    content += "No extra information available for this battery type";
 
     content += "</div>";
 
-    content += "<button onclick='goToMainPage()'>Back to main page</button>";
     content += "<script>";
     content += "function goToMainPage() { window.location.href = '/'; }";
     content += "</script>";
     return content;
   }
   return String();
-}
+}

Software/src/devboard/webserver/settings_html.cpp

@@ -10,6 +10,8 @@ String settings_processor(const String& var) {
     content += "body { background-color: black; color: white; }";
     content += "</style>";
 
+    content += "<button onclick='goToMainPage()'>Back to main page</button>";
+
     // Start a new block with a specific background color
     content += "<div style='background-color: #303E47; padding: 10px; margin-bottom: 10px;border-radius: 50px'>";
 
@@ -201,7 +203,6 @@ String settings_processor(const String& var) {
 #endif
     content += "</script>";
 
-    content += "<button onclick='goToMainPage()'>Back to main page</button>";
     content += "<script>";
     content += "function goToMainPage() { window.location.href = '/'; }";
     content += "</script>";

Software/src/devboard/webserver/webserver.cpp

@@ -11,11 +11,11 @@ AsyncWebServer server(80);
 // Measure OTA progress
 unsigned long ota_progress_millis = 0;
 
+#include "advanced_battery_html.h"
 #include "cellmonitor_html.h"
 #include "events_html.h"
 #include "index_html.cpp"
 #include "settings_html.h"
-#include "advanced_battery_html.h"
 
 enum WifiState {
   INIT,          //before connecting first time
@@ -61,8 +61,9 @@ void init_webserver() {
             [](AsyncWebServerRequest* request) { request->send_P(200, "text/html", index_html, settings_processor); });
 
   // Route for going to advanced battery info web page
-  server.on("/advanced", HTTP_GET,
+  server.on("/advanced", HTTP_GET, [](AsyncWebServerRequest* request) {
-            [](AsyncWebServerRequest* request) { request->send_P(200, "text/html", index_html, advanced_battery_processor); });
+    request->send_P(200, "text/html", index_html, advanced_battery_processor);
+  });
 
   // Route for going to cellmonitor web page
   server.on("/cellmonitor", HTTP_GET, [](AsyncWebServerRequest* request) {
@@ -411,6 +412,14 @@ String processor(const String& var) {
     content += "body { background-color: black; color: white; }";
     content += "</style>";
 
+    // Draw buttons
+    content += "<button onclick='OTA()'>Perform OTA update</button> ";
+    content += "<button onclick='Settings()'>Change Settings</button> ";
+    content += "<button onclick='Advanced()'>Advanced Battery Insights</button> ";
+    content += "<button onclick='Cellmon()'>Cellmonitor</button> ";
+    content += "<button onclick='Events()'>Events</button> ";
+    content += "<button onclick='askReboot()'>Reboot Emulator</button>";
+
     // Start a new block with a specific background color
     content += "<div style='background-color: #303E47; padding: 10px; margin-bottom: 10px;border-radius: 50px'>";
 
@@ -788,19 +797,11 @@ String processor(const String& var) {
     content += "</div>";
 #endif  // defined CHEVYVOLT_CHARGER || defined NISSANLEAF_CHARGER
 
-    content += "<button onclick='OTA()'>Perform OTA update</button>";
-    content += " ";
-    content += "<button onclick='Settings()'>Change Settings</button>";
-    content += " ";
-    content += "<button onclick='Cellmon()'>Cellmonitor</button>";
-    content += " ";
-    content += "<button onclick='Events()'>Events</button>";
-    content += " ";
-    content += "<button onclick='askReboot()'>Reboot Emulator</button>";
     content += "<script>";
     content += "function OTA() { window.location.href = '/update'; }";
     content += "function Cellmon() { window.location.href = '/cellmonitor'; }";
     content += "function Settings() { window.location.href = '/settings'; }";
+    content += "function Advanced() { window.location.href = '/advanced'; }";
     content += "function Events() { window.location.href = '/events'; }";
     content +=
         "function askReboot() { if (window.confirm('Are you sure you want to reboot the emulator? NOTE: If "